| 研究生: |
陳明杉 Ming-Shan Chen |
|---|---|
| 論文名稱: |
射出成型智慧型手機之超薄型導光板 光學輝度特性研究 The study of optical properties of smartphone ultra-thin light guide plate by injection mold processes |
| 指導教授: |
陳奇夆
Chi-feng Chen |
| 口試委員: | |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 機械工程學系在職專班 Executive Master of Mechanical Engineering |
| 論文出版年: | 2013 |
| 畢業學年度: | 101 |
| 語文別: | 中文 |
| 論文頁數: | 102 |
| 中文關鍵詞: | 導光板 、射出成型參數 、平均輝度 、均勻度 |
| 外文關鍵詞: | light guide plates, injection molding parameters, luminance, uniformity |
| 相關次數: | 點閱:13 下載:0 |
| 分享至: |
| 查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報 |
導光板是背光模組中最主要的零件之一,主要是將其光源導引行進方向並轉為均勻且高亮度的光源。高輝度與高均齊性為薄型化導光板的主要需求趨勢。
本研究有別於現行的導光板輔助成型技術,以一般射出成型法,成型厚度0.2mm 智慧型手機功能區域的超薄導光板,再搭配CAE 模流分析與光學模擬軟體,討論在三種不同成型參數,如模溫、料溫、射出速度對導光模組平均輝度與均勻度的影響。利用光學級塑料聚碳酸酯(PC) 與聚甲基丙烯酸甲脂(PMMA) ,以射出成型的参數設定,透過料溫(±10℃ )、模溫(±10℃ )、射出速度,得到不同成型参數的成型品,探討射出成型製程參數對平均輝度與均勻度的影響。
實驗結果發現,當模溫增加時PC 塑料成型品的平均輝度隨著模溫的提升而增加,但是均勻度卻會下降,反觀PMMA塑料成型品在模溫增加時平均輝度會降低,但均勻度會提高。將料溫提升時,兩種塑料成型品的平均輝度與均勻度均隨之提高。速度参數的增加會降低兩種塑料成型品的平均輝度,但是均勻度卻會增加。將兩種塑料比對後,PC 塑料成型品的光學特性均優於PMMA 塑料成型品。
This study investigates the effect of processing conditions on the optics properties of the plastic optics grade of Polycarbonate (PC) and Polymethyl Methacrylate (PMMA) parts. The molding window of smartphone Ultra-thin light guide plate was under the molding conditions of melt temperature (± 10 ℃), mold temperature (± 10 ℃), higher
injection pressure and various injection velocity. The parts were molded to measure the luminance and uniformity and the plastic injection molding computer-aided engineering (CAE) simulation results were verified by the experiment results.
By research aftermath of finding, the injection molding parameters that affect optical performance of the PC and PMMA parts. The PC parts shows the uniformity increases as the mold temperature increases, but the luminance will decreased. On the other hand, the optical performance of
the PMMA parts, that shows the luminance increases as the mold temperature increases, but the uniformity will decreased. The PC and PMMA parts the optical performance that the luminance and uniformity increases as the melt temperature increases. When the injection velocity
increased that affect the luminance decreased, but the uniformity will increases. Compare the optical performance with PC and PMMA parts, the PC parts was better than the PMMA parts.
[1] 林雅蘭,「LED 背光模組設計」,中央大學碩士論文,2009。
[2] 施至柔,「背光模組光學模擬技術」,交通大學碩士論文,1998。
[3] 蘇紹安,「非印刷式背光模組光學模擬分析」,中華大學碩士論文,2000。
[4] Kalantar Kalil, Matsumoto Shingo, Onishi Tomohisa, “Functional light guide plate characterized by optical micro-deflector and micro-reflector for LCD backlight”, IEICE Transactions on Electronics, v E84-C, n 11, p1637-1646, 2001.
[5] 蔣宗樹,「導光板導光設計之研究」,中原大學碩士論文,2003。
[6] 方育斌,「背光模組之光學最佳化設計」,成功大學碩士論文,2003。
[7] 詹展昌,「LCD 導光板入光面特性研究」,大葉大學碩士論文,2003。
[8] Kalantar Kalil, Matsumoto Shingo, Katoh Tatsuya, Mizuno,
“Backlight unit with double-surface light emission using a single micro-structured light guide plate”, Journal of the Society for Information Display, v 12, n 4, p 379-387, 2004.
[9] 黃彥文,「超薄型導光板光學設計與精密成型分析」,高雄應用科技大學碩士論文,2005。
[10]蘇莉琪,「具雙面微結構設計之導光板光學性質之研究」,中原大學碩士論文,2006。
[11] B. Sanschagrin, “Process Control of Injection Molding”, Polym. Eng. and Sci., Vol. 23, No. 8, pp. 431-438, 1983.
[12] Johannaber F., “Injection Molding Machines a User’s Guide”,Hanser /Gardner Publications, Inc.,Cincinnati, p33-37, 1985.
[13] Friedrichs, “ Injection Compression Molding of Thin-Walled Thermo- plastic Parts”, Kunststoffe German Plastics, v80, n5, p13,1990.
[14] 杜俐芊,「微米薄流路內之聚合物流動特性」,交通大學碩士論文,1998。
[15] Despa M.S., Kelly K.W, Collier J.R., “ Injection Molding of polymeric LIGA HARMs”, Microsystem Technologies, v6,n2,p60-66, 1999.
[16] Greener J., “General Consequences of the Packing Phase in injectionMolding”, Polymer Engineering and Science, v26, n12,p886-892,2001.
[17] 黃東鴻,「薄殼射出件翹曲變形與殘留應力研究」,成功大學碩士論文,2002。
[18] 陳信瑋,「射出成型參數對光學鏡片表面粗糙度的影響」,高雄應用科技大學碩士論文,2007。
[19] 耿繼業、何建娃,幾何光學,全華科技圖書股份有限公司,2002。
[20] 施盈儐,「鏡片模仁表面粗糙度之光散射效應研究」,明志科技大學碩士論文,2007。
[21] Instrument Systems light measurement: "Applications
spectroradiometry-and-photometry/optical-quantities". 2013/07/26,http://www.instrumentsystems.tw/applications/spectroradiometry-and-photometry/optical-quantities/
[22] 科盛科技,CAE 模流分析入門與應用,全華科技圖書股份有限公司,2002。
[23] 劉士榮,高分子流變學-塑膠之加工特性,滄海圖書,2005。
[24] 宋昱廷,「超薄型導光板光學設計與模內成形分析」,高雄應用科技大學碩士論文,2007。
[25] Can Weng, W.B. Lee, S. To, Bing-yan Jiang, ”Numerical simulation of residual stress and birefringence in the precision injection molding of plastic microlens arrays”, International Communications in Heat and Mass Transfer Volume 36, Issue 3, March 2009, Pages 213–219.
[26] Can Weng, W.B. Lee, S. To, ” Birefringence techniques for the characterization of residual stresses in injection-moulded micro-lens arrays”, Polymer Testing, Volume 28, Issue 7, October 2009, Pages 709–714.
[27] Sung Ho Kim, In Hwan Sul, Jun-ho Jeong, Young Seok Song, Jae Ryoun Youn,” Robust fabrication and evaluation of nanopattern insert molded parts”, European Polymer Journal,Volume 49, Issue 6,June 2013, Pages 1437–1445.
[28] V. Kalima, J. Pietarinen, S. Siitonen, J. Immonen, M. Suvanto, M.Kuittinen, K. Mönkkönen, T.T. Pakkanen, “Transparentthermoplastics: Replication of diffractive optical elements using micro-injection molding”, Optical Materials, Volume 30, Issue 2,October 2007, Pages 285–291.
[29] 蔡俊欽,「導光板光學設計及製程之最佳化研究」,高雄應用科技大學碩士論文,2004。
[30] Chun-Sheng Chen, Shia-Chung Chen, Won-Hsion Liao, Rean-Der Chien, Su-Hsia Line, “Micro injection molding of a micro-fluidic platform “, International Communications in Heat and Mass Transfer,Volume 37, Issue 9, November 2010, Pages 1290–1294.
[31] Hiroshi Ito ,Hajime Suzuki, Kunihiko Kazama, Takeshi Kikutani,“Polymer structure and properties in micro- and nanomolding process”, Current Applied Physics, Volume 9, Issue 2, Supplement,March 2009, Pages e19–e24, Nano Korea 2008 Symposium.